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helm/pkg/storage/storage_test.go

351 lines
11 KiB

/*
Copyright 2016 The Kubernetes Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package storage // import "k8s.io/helm/pkg/storage"
import (
"fmt"
"reflect"
"testing"
rspb "k8s.io/helm/pkg/hapi/release"
"k8s.io/helm/pkg/storage/driver"
)
func TestStorageCreate(t *testing.T) {
// initialize storage
storage := Init(driver.NewMemory())
// create fake release
rls := ReleaseTestData{
Name: "angry-beaver",
Version: 1,
}.ToRelease()
assertErrNil(t.Fatal, storage.Create(rls), "StoreRelease")
// fetch the release
res, err := storage.Get(rls.Name, rls.Version)
assertErrNil(t.Fatal, err, "QueryRelease")
// verify the fetched and created release are the same
if !reflect.DeepEqual(rls, res) {
t.Fatalf("Expected %v, got %v", rls, res)
}
}
func TestStorageUpdate(t *testing.T) {
// initialize storage
storage := Init(driver.NewMemory())
// create fake release
rls := ReleaseTestData{
Name: "angry-beaver",
Version: 1,
Status: rspb.StatusDeployed,
}.ToRelease()
assertErrNil(t.Fatal, storage.Create(rls), "StoreRelease")
// modify the release
rls.Info.Status = rspb.StatusDeleted
assertErrNil(t.Fatal, storage.Update(rls), "UpdateRelease")
// retrieve the updated release
res, err := storage.Get(rls.Name, rls.Version)
assertErrNil(t.Fatal, err, "QueryRelease")
// verify updated and fetched releases are the same.
if !reflect.DeepEqual(rls, res) {
t.Fatalf("Expected %v, got %v", rls, res)
}
}
func TestStorageDelete(t *testing.T) {
// initialize storage
storage := Init(driver.NewMemory())
// create fake release
rls := ReleaseTestData{
Name: "angry-beaver",
Version: 1,
}.ToRelease()
rls2 := ReleaseTestData{
Name: "angry-beaver",
Version: 2,
}.ToRelease()
assertErrNil(t.Fatal, storage.Create(rls), "StoreRelease")
assertErrNil(t.Fatal, storage.Create(rls2), "StoreRelease")
// delete the release
res, err := storage.Delete(rls.Name, rls.Version)
assertErrNil(t.Fatal, err, "DeleteRelease")
// verify updated and fetched releases are the same.
if !reflect.DeepEqual(rls, res) {
t.Fatalf("Expected %v, got %v", rls, res)
}
hist, err := storage.History(rls.Name)
if err != nil {
t.Errorf("unexpected error: %s", err)
}
// We have now deleted one of the two records.
if len(hist) != 1 {
t.Errorf("expected 1 record for deleted release version, got %d", len(hist))
}
if hist[0].Version != 2 {
t.Errorf("Expected version to be 2, got %d", hist[0].Version)
}
}
func TestStorageList(t *testing.T) {
// initialize storage
storage := Init(driver.NewMemory())
// setup storage with test releases
setup := func() {
// release records
rls0 := ReleaseTestData{Name: "happy-catdog", Status: rspb.StatusSuperseded}.ToRelease()
rls1 := ReleaseTestData{Name: "livid-human", Status: rspb.StatusSuperseded}.ToRelease()
rls2 := ReleaseTestData{Name: "relaxed-cat", Status: rspb.StatusSuperseded}.ToRelease()
rls3 := ReleaseTestData{Name: "hungry-hippo", Status: rspb.StatusDeployed}.ToRelease()
rls4 := ReleaseTestData{Name: "angry-beaver", Status: rspb.StatusDeployed}.ToRelease()
rls5 := ReleaseTestData{Name: "opulent-frog", Status: rspb.StatusDeleted}.ToRelease()
rls6 := ReleaseTestData{Name: "happy-liger", Status: rspb.StatusDeleted}.ToRelease()
// create the release records in the storage
assertErrNil(t.Fatal, storage.Create(rls0), "Storing release 'rls0'")
assertErrNil(t.Fatal, storage.Create(rls1), "Storing release 'rls1'")
assertErrNil(t.Fatal, storage.Create(rls2), "Storing release 'rls2'")
assertErrNil(t.Fatal, storage.Create(rls3), "Storing release 'rls3'")
assertErrNil(t.Fatal, storage.Create(rls4), "Storing release 'rls4'")
assertErrNil(t.Fatal, storage.Create(rls5), "Storing release 'rls5'")
assertErrNil(t.Fatal, storage.Create(rls6), "Storing release 'rls6'")
}
var listTests = []struct {
Description string
NumExpected int
ListFunc func() ([]*rspb.Release, error)
}{
{"ListDeleted", 2, storage.ListDeleted},
{"ListDeployed", 2, storage.ListDeployed},
{"ListReleases", 7, storage.ListReleases},
}
setup()
for _, tt := range listTests {
list, err := tt.ListFunc()
assertErrNil(t.Fatal, err, tt.Description)
// verify the count of releases returned
if len(list) != tt.NumExpected {
t.Errorf("ListReleases(%s): expected %d, actual %d",
tt.Description,
tt.NumExpected,
len(list))
}
}
}
func TestStorageDeployed(t *testing.T) {
storage := Init(driver.NewMemory())
const name = "angry-bird"
const vers = 4
// setup storage with test releases
setup := func() {
// release records
rls0 := ReleaseTestData{Name: name, Version: 1, Status: rspb.StatusSuperseded}.ToRelease()
rls1 := ReleaseTestData{Name: name, Version: 2, Status: rspb.StatusSuperseded}.ToRelease()
rls2 := ReleaseTestData{Name: name, Version: 3, Status: rspb.StatusSuperseded}.ToRelease()
rls3 := ReleaseTestData{Name: name, Version: 4, Status: rspb.StatusDeployed}.ToRelease()
// create the release records in the storage
assertErrNil(t.Fatal, storage.Create(rls0), "Storing release 'angry-bird' (v1)")
assertErrNil(t.Fatal, storage.Create(rls1), "Storing release 'angry-bird' (v2)")
assertErrNil(t.Fatal, storage.Create(rls2), "Storing release 'angry-bird' (v3)")
assertErrNil(t.Fatal, storage.Create(rls3), "Storing release 'angry-bird' (v4)")
}
setup()
rls, err := storage.Last(name)
if err != nil {
t.Fatalf("Failed to query for deployed release: %s\n", err)
}
switch {
case rls == nil:
t.Fatalf("Release is nil")
case rls.Name != name:
t.Fatalf("Expected release name %q, actual %q\n", name, rls.Name)
case rls.Version != vers:
t.Fatalf("Expected release version %d, actual %d\n", vers, rls.Version)
case rls.Info.Status != rspb.StatusDeployed:
t.Fatalf("Expected release status 'DEPLOYED', actual %s\n", rls.Info.Status.String())
}
}
func TestStorageHistory(t *testing.T) {
storage := Init(driver.NewMemory())
const name = "angry-bird"
// setup storage with test releases
setup := func() {
// release records
rls0 := ReleaseTestData{Name: name, Version: 1, Status: rspb.StatusSuperseded}.ToRelease()
rls1 := ReleaseTestData{Name: name, Version: 2, Status: rspb.StatusSuperseded}.ToRelease()
rls2 := ReleaseTestData{Name: name, Version: 3, Status: rspb.StatusSuperseded}.ToRelease()
rls3 := ReleaseTestData{Name: name, Version: 4, Status: rspb.StatusDeployed}.ToRelease()
// create the release records in the storage
assertErrNil(t.Fatal, storage.Create(rls0), "Storing release 'angry-bird' (v1)")
assertErrNil(t.Fatal, storage.Create(rls1), "Storing release 'angry-bird' (v2)")
assertErrNil(t.Fatal, storage.Create(rls2), "Storing release 'angry-bird' (v3)")
assertErrNil(t.Fatal, storage.Create(rls3), "Storing release 'angry-bird' (v4)")
}
setup()
h, err := storage.History(name)
if err != nil {
t.Fatalf("Failed to query for release history (%q): %s\n", name, err)
}
if len(h) != 4 {
t.Fatalf("Release history (%q) is empty\n", name)
}
}
func TestStorageRemoveLeastRecent(t *testing.T) {
storage := Init(driver.NewMemory())
storage.Log = t.Logf
// Make sure that specifying this at the outset doesn't cause any bugs.
storage.MaxHistory = 10
const name = "angry-bird"
// setup storage with test releases
setup := func() {
// release records
rls0 := ReleaseTestData{Name: name, Version: 1, Status: rspb.StatusSuperseded}.ToRelease()
rls1 := ReleaseTestData{Name: name, Version: 2, Status: rspb.StatusSuperseded}.ToRelease()
rls2 := ReleaseTestData{Name: name, Version: 3, Status: rspb.StatusSuperseded}.ToRelease()
rls3 := ReleaseTestData{Name: name, Version: 4, Status: rspb.StatusDeployed}.ToRelease()
// create the release records in the storage
assertErrNil(t.Fatal, storage.Create(rls0), "Storing release 'angry-bird' (v1)")
assertErrNil(t.Fatal, storage.Create(rls1), "Storing release 'angry-bird' (v2)")
assertErrNil(t.Fatal, storage.Create(rls2), "Storing release 'angry-bird' (v3)")
assertErrNil(t.Fatal, storage.Create(rls3), "Storing release 'angry-bird' (v4)")
}
setup()
// Because we have not set a limit, we expect 4.
expect := 4
if hist, err := storage.History(name); err != nil {
t.Fatal(err)
} else if len(hist) != expect {
t.Fatalf("expected %d items in history, got %d", expect, len(hist))
}
storage.MaxHistory = 3
rls5 := ReleaseTestData{Name: name, Version: 5, Status: rspb.StatusDeployed}.ToRelease()
assertErrNil(t.Fatal, storage.Create(rls5), "Storing release 'angry-bird' (v5)")
// On inserting the 5th record, we expect two records to be pruned from history.
hist, err := storage.History(name)
if err != nil {
t.Fatal(err)
} else if len(hist) != storage.MaxHistory {
for _, item := range hist {
t.Logf("%s %v", item.Name, item.Version)
}
t.Fatalf("expected %d items in history, got %d", storage.MaxHistory, len(hist))
}
// We expect the existing records to be 3, 4, and 5.
for i, item := range hist {
v := item.Version
if expect := i + 3; v != expect {
t.Errorf("Expected release %d, got %d", expect, v)
}
}
}
func TestStorageLast(t *testing.T) {
storage := Init(driver.NewMemory())
const name = "angry-bird"
// Set up storage with test releases.
setup := func() {
// release records
rls0 := ReleaseTestData{Name: name, Version: 1, Status: rspb.StatusSuperseded}.ToRelease()
rls1 := ReleaseTestData{Name: name, Version: 2, Status: rspb.StatusSuperseded}.ToRelease()
rls2 := ReleaseTestData{Name: name, Version: 3, Status: rspb.StatusSuperseded}.ToRelease()
rls3 := ReleaseTestData{Name: name, Version: 4, Status: rspb.StatusFailed}.ToRelease()
// create the release records in the storage
assertErrNil(t.Fatal, storage.Create(rls0), "Storing release 'angry-bird' (v1)")
assertErrNil(t.Fatal, storage.Create(rls1), "Storing release 'angry-bird' (v2)")
assertErrNil(t.Fatal, storage.Create(rls2), "Storing release 'angry-bird' (v3)")
assertErrNil(t.Fatal, storage.Create(rls3), "Storing release 'angry-bird' (v4)")
}
setup()
h, err := storage.Last(name)
if err != nil {
t.Fatalf("Failed to query for release history (%q): %s\n", name, err)
}
if h.Version != 4 {
t.Errorf("Expected revision 4, got %d", h.Version)
}
}
type ReleaseTestData struct {
Name string
Version int
Manifest string
Namespace string
Status rspb.ReleaseStatus
}
func (test ReleaseTestData) ToRelease() *rspb.Release {
return &rspb.Release{
Name: test.Name,
Version: test.Version,
Manifest: test.Manifest,
Namespace: test.Namespace,
Info: &rspb.Info{Status: test.Status},
}
}
func assertErrNil(eh func(args ...interface{}), err error, message string) {
if err != nil {
eh(fmt.Sprintf("%s: %q", message, err))
}
}